body {
	background-color: #f8f8f8;
	overflow: scroll;
}
#topNavBox {
	width: 100%;
	height: 50px;
}
#topNav {
	padding: 0 16px;
	width: 100%;
	> ul {
		border-bottom: 1px solid #e6e6e6;
		li {
			flex: 1;
			height: 50px;
			line-height: 50px;
			text-align: center;
			box-sizing: border-box;
			&.activeTop {
				color: #4797fc;
				font-size: 16px;
				border-bottom: 2px solid #4797fc;
			}
		}
	}
}
// 课程推荐
.course {
	ul {
		margin-top: 10px;
		li {
			border-radius: 10px;
			border: 1px solid #ccc;
			overflow: hidden;
			margin-bottom: 20px;
			a {
				color: #000;
				img {
					width: 100%;
					height: 150px;
				}
			}
		}
	}
}
